<?php

namespace frontend\controllers;

use Yii;
use yii\base\InvalidParamException;
use yii\web\BadRequestHttpException;
use yii\web\Controller;
use yii\filters\VerbFilter;
use yii\filters\AccessControl;
use frontend\models\LoginForm;
use frontend\models\PasswordResetRequestForm;
use frontend\models\ResetPasswordForm;
use frontend\models\SignupForm;
use frontend\models\ContactForm;
use common\models\Post;
use common\components\SubjectHelper;
use yii\helpers\Url;
use yii\data\Pagination;

/**
 * Site controller
 */
class SiteController extends Controller {

    /**
     * @inheritdoc
     */
    public function behaviors() {
        return [
            'access' => [
                'class' => AccessControl::className(),
                'only' => ['logout', 'signup'],
                'rules' => [
                    [
                        'actions' => ['signup'],
                        'allow' => true,
                        'roles' => ['?'],
                    ],
                    [
                        'actions' => ['logout'],
                        'allow' => true,
                        'roles' => ['@'],
                    ],
                ],
            ],
            'verbs' => [
                'class' => VerbFilter::className(),
                'actions' => [
                    'logout' => ['post'],
                ],
            ],
            // view页面缓存，1天有效
            'viewCache' => [
                'class' => 'common\components\PageCache',
                'only' => ['index'],
                'duration' => 86400,
                'variations' => [\Yii::$app->language,],
                'dependency' => [
                    'class' => 'yii\caching\DbDependency',
                    'sql' => 'SELECT `id` FROM `post` ORDER BY `id` DESC LIMIT 1',
                ],
            ],
        ];
    }

    /**
     * @inheritdoc
     */
    public function actions() {
        return [
            'error' => [
                'class' => 'yii\web\ErrorAction',
//                'layout' => '@frontend/views/layouts/note.php',
            ],
            'captcha' => [
                'class' => 'yii\captcha\CaptchaAction',
                'fixedVerifyCode' => YII_ENV_TEST ? 'testme' : null,
            ],
        ];
    }

    /**
     * Displays homepage.
     *
     * @return mixed
     */
    public function actionIndex() {
        $query = Post::find()->with('c')->where(['enable'=>1])->asArray();
        $pagination = new Pagination([
            'defaultPageSize' => 20,
            'totalCount' => $query->count(),
        ]);
        $model = $query->orderBy('id desc')
                ->offset($pagination->offset)
                ->limit($pagination->limit)
                ->all();

        $hot = Post::find()->with('c')->where(['enable'=>1])->asArray()->orderBy('view desc')->limit(10)->all();
        $cache = Yii::$app->cache;
        $tag = $cache->get("tagPost");
        if ($tag === false) {
            $tag = SubjectHelper::PostTags();
            $cache->set("tagPost", $tag);
        }
        $this->layout = '@frontend/views/layouts/site-home.php';
        return $this->render('index', [
                    'model' => $model,
                    'hot' => $hot,
                    'tag' => $tag,
                    'pagination' => $pagination,
        ]);
    }

    /**
     * Logs in a user.
     *
     * @return mixed
     */
    public function actionLogin() {
        if (!Yii::$app->user->isGuest) {
            return $this->goHome();
        }

        $model = new LoginForm();
        if ($model->load(Yii::$app->request->post()) && $model->login()) {
            return $this->goBack();
        } else {
            return $this->render('login', [
                        'model' => $model,
            ]);
        }
    }

    /**
     * Logs out the current user.
     *
     * @return mixed
     */
    public function actionLogout() {
        Yii::$app->user->logout();

        return $this->goHome();
    }

    /**
     * Displays contact page.
     *
     * @return mixed
     */
    public function actionContact() {
//        print "hello world";
        $model = new ContactForm();
        if ($model->load(Yii::$app->request->post()) && $model->validate()) {
            if ($model->sendEmail(Yii::$app->params['adminEmail'])) {
                Yii::$app->session->setFlash('success', 'Thank you for contacting us. We will respond to you as soon as possible.');
            } else {
                Yii::$app->session->setFlash('error', 'There was an error sending email.');
            }

            return $this->refresh();
        } else {
            $this->layout = '@frontend/views/layouts/note.php';
            return $this->render('contact', [
                        'model' => $model,
            ]);
        }
    }

    /**
     * Displays about page.
     *
     * @return mixed
     */
    public function actionAbout() {
        $this->layout = '@frontend/views/layouts/note.php';
        return $this->render('about');
    }

    /**
     * Signs user up.
     *
     * @return mixed
     */
    public function actionSignup() {
        $model = new SignupForm();
        if ($model->load(Yii::$app->request->post())) {
            if ($user = $model->signup()) {
                if (Yii::$app->getUser()->login($user)) {
//                    return $this->goHome();
                    return $this->redirect(Url::toRoute('profile/create'));
                }
            }
        }

        return $this->render('signup', [
                    'model' => $model,
        ]);
    }

    /**
     * Requests password reset.
     *
     * @return mixed
     */
    public function actionRequestPasswordReset() {
        $model = new PasswordResetRequestForm();
        if ($model->load(Yii::$app->request->post()) && $model->validate()) {
            if ($model->sendEmail()) {
                Yii::$app->session->setFlash('success', '请查看你的邮箱并根据提示进行找回密码操作.');

                return $this->goHome();
            } else {
                Yii::$app->session->setFlash('error', '抱歉, 我们无法重置该邮箱账户的密码');
            }
        }

        return $this->render('requestPasswordResetToken', [
                    'model' => $model,
        ]);
    }

    /**
     * Resets password.
     *
     * @param string $token
     * @return mixed
     * @throws BadRequestHttpException
     */
    public function actionResetPassword($token) {
        try {
            $model = new ResetPasswordForm($token);
        } catch (InvalidParamException $e) {
            throw new BadRequestHttpException($e->getMessage());
        }

        if ($model->load(Yii::$app->request->post()) && $model->validate() && $model->resetPassword()) {
            Yii::$app->session->setFlash('success', 'New password was saved.');

            return $this->goHome();
        }

        return $this->render('resetPassword', [
                    'model' => $model,
        ]);
    }

}
